We've had pretty good luck getting a response within a week or two of when we email the WC (at Dreams Punta Cana) which isn't as immediate as I'd like but I try to remember that they have weddings every day and if every bride is emailing her with questions, plus they have to be there for the actual wedding, they're probably pretty busy. Though it can be frustrating, we emailed a list of questions and to one she replied that she'll book a welcome dinner for our 39 guests, but then a few lines later said that the the place we want for our reception won't fit 60 people. (that's nice, we don't have 60 people!) I think calling directly would be a little expensive but you'll probably get your answers quicker.